Huge banners bearing the portrait of Janusz Walus can often be seen draped around football stadiums in Poland calling for the freedom of a man serving a life sentence in South Africa for the 1993 murder of prominent anti-apartheid leader Chris Hani.
Many feared that Hani's killing could provoke a racial war, coming at a crucial point in talks for the white minority to hand over power, which eventually happened when Nelson Mandela became president the following year after the country's first all-race elections.
It is unclear how Walus became a symbol for young Polish nationalists and fascists but about 10 years ago, he started receiving letters from supporters in Poland, journalist Cezary Lazarewicz, who interviewed Walus for his book, told the BBC.
"They wrote to him that they admired him because he tried to stop communism in South Africa, that he is the great hope of the white race," he said.
In pictures and videos posted online some of the football fans in the stands are carrying scarves with the hashtag #StayStrongBrother printed on them.
It's inspired by a song dedicated to him which includes the lyrics: "A few men could ever take the step you did, to enter the path of glory and victory".
"The fans are not calling on Walus' release on humanitarian grounds, but they are glorifying what he did and the ideology," Dr Rafal Pankowski, from Never Again association, an anti-racist group, told the BBC.